One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,5)(6,8)(9,10,14,12)(11,16,13,15)(19,25)(23,28)(26,31)(30,32)(34,38)(35,41)(36,44)(46,48)(1,3)(2,6)(4,7)(5,8)(10,12)(11,13)(18,22)(19,25)(24,29)(26,31) involution — undirected(1,3,5,8)(2,7,4,6)(9,11,14,13)(10,15,12,16)(17,18,21,22)(19,23,25,28)(20,24,27,29)(26,30,31,32)(33,34,37,38)(35,42,41,39)(36,40,44,45)(43,48,47,46)(1,3)(2,7)(4,6)(5,8)(9,12,14,10)(11,16,13,15)(17,19)(18,23)(20,26)(21,25)(22,28)(24,30)(27,31)(29,32)(33,35,37,41)(34,39,38,42)(36,43,44,47)(40,46,45,48)(1,4,5,2)(3,6,8,7)(9,13,14,11)(10,16,12,15)(17,20,21,27)(18,24,22,29)(19,26,25,31)(23,30,28,32)(33,36)(34,40)(35,43)(37,44)(38,45)(39,46)(41,47)(42,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.